Police tape blocks the sidewalk.Fred Lum/The Globe and Mail
One of two teenagers who pleaded guilty to three counts each of first-degree murder and conspiracy to commit murder has been handed an adult sentence by a Quebec judge.
He was sentenced today to life in prison without possibility of parole for 10 years.
The accused had pleaded guilty to three charges of premeditated murder and three of conspiracy to commit murder in June 2014.
The victims of the Feb. 11, 2014 slayings in a private home on Sicard Street were two sisters aged 22 and 17 as well as a 17-year-old boyfriend.
The teen, who was 16 at the time of the killings, was also found to have conspired to murder the mother of two of the victims as well as police responding to the rampage.
His co-accused, then 17, also pleaded guilty to the same charges in June 2015 and has yet to be sentenced.
Authorities say jealousy was considered to be a likely factor in the deaths.
Trois-Rivieres, Que. is located halfway between Montreal and Quebec City.